INDEX TO VOLUME XXII 837 



PAGE 



Studies for Students: A Classification of Common Sediments and Some 

 Criteria for Identification of the Various Classes. By Arthur C. 

 Trowbridge 420 



Studies of Flint Clays and Their Associates. By Sydney Longman 



Galpin. Review by A. J 277 



Suess, Eduard. By William Herbert Hobbs 811 



Sulphide Ores of Copper, The. Some Results of Microscopic Study. 



By L. C. Graton and Joseph Murdock. Review by A. J. . . 278 



Summers, H. S. and E. W. Skeats. The Geology and Petrology of the 



Macedon District. Review by A. J. 627 



Sun River District, Montana, Notes on the Geology of the. By Sidney 



Powers and Hervey W. Shimer 556 



Supposed Origin of the Moldavites and Like Sporadic Glasses from 



Various Sources, On the. By George P. Merrill. Review by A. J. 530 



Sur la presence au Gabon de roches appartenantes a la serie de la char- 



nockite. By H. Arsandaux. Review by F. C. Calkins . . 189 



Siissmilch, C. A., H. Stanley Jevons, and H. I. Jensen. The Differen- 

 tiation Phenomena of the Prospect Intrusion. Review by A. J. . 281 



Siissmilch, C. A., H. Stanley Jevons, H. I. Jensen, and T. G. Taylor. 

 The Geology and Petrography of the Prospect Intrusion. Review 

 by Albert Johannsen 280 



System Si02, Ueber das. By K. Endell and A. Smits. Review by A. J. 276 



Systematik der Eruptivgesteine, Die. Erster Teil. By L. Milch. 



Review by A. J 533 



Taylor, T. G., H. Stanley Jevons, H. I. Jenson, and C. A. Siissmilch. 

 The Geology and Petrography of the Prospect Intrusion. Review 

 by Albert Johannsen 280 



Textbook of Paleontology. Edited by Charles R. Eastman. Adapted 



from the German of Karl A. von Zittel. Review by S. W. . . 287 



Thermal Microscope for the Measurement of the Optical Constants of 

 Minerals at High Temperatures, A New. By Fred. Eugene Wright. 

 Review by A. J 726 



Tourmaline Copper Veins, The, in the Yakuoji Mine, Nagato Province, 



Japan. By Takeo Kato. Review by A. J 284 



Traite de technique mineralogique et petrographique. Vol. II-i. Les 

 methodes chimiques qualitatives. By Louis Duparc and Alfred 

 Monnier. Review by Albert Johannsen 275 



Trowbridge, Arthur C. Studies for Students: A Classiiication of Com- 

 mon Sediments and Some Criteria for Identification of the Various 

 Classes 420 



Turquoise, The Origin of, in the Burro Mountains, New Mexico. By 



Sidney Paige. Review by A. J 533 



